gas bomb vs chemical bomb

gas bomb and chemical bomb both are nouns.

Word	Noun	Adjective	Verb	Adverb
gas bomb	Yes	No	No	No
chemical bomb	Yes	No	No	No

As nouns, gas bomb and chemical bomb are synonyms defined as:

gas bomb and chemical bomb: a bomb laden with chemical agents that are released when the bomb explodes

gas bomb (noun)	chemical bomb (noun)
a bomb laden with chemical agents that are released when the bomb explodes	a bomb laden with chemical agents that are released when the bomb explodes